sunxi: a13-olinuxino: Add user LED to the device tree

Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun5i-a13-olinuxino.dts

@@ -23,8 +23,28 @@
 	};
 
 	soc {
+		pinctrl@01c20800 {
+			led_pins_olinuxino: led_pins@0 {
+				allwinner,pins = "PG9";
+				allwinner,function = "gpio_out";
+				allwinner,drive = <1>;
+				allwinner,pull = <0>;
+			};
+		};
+
 		uart1: uart@01c28400 {
 			status = "okay";
 		};
 	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&led_pins_olinuxino>;
+
+		power {
+			gpios = <&pio 6 9 0>;
+			default-state = "on";
+		};
+	};
 };